diff --git a/.gitignore b/.gitignore
index d87d4be..f294155 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,6 @@ spec/reports
 test/tmp
 test/version_tmp
 tmp
+*.swp
+.rspec
+vendor/bundle
diff --git a/.rspec b/.rspec
new file mode 100644
index 0000000..b83d9b7
--- /dev/null
+++ b/.rspec
@@ -0,0 +1,3 @@
+--color
+--format documentation
+--require spec_helper
diff --git a/spec/issue_tracker_spec.rb b/spec/issue_tracker_spec.rb
new file mode 100644
index 0000000..22dd275
--- /dev/null
+++ b/spec/issue_tracker_spec.rb
@@ -0,0 +1,156 @@
+describe ErrbitGithubPlugin::IssueTracker do
+  describe '.label' do
+    it 'return LABEL' do
+      expect(described_class.label).to eq described_class::LABEL
+    end
+  end
+
+  describe '.note' do
+    it 'return NOTE' do
+      expect(described_class.note).to eq described_class::NOTE
+    end
+  end
+
+  describe '.fields' do
+    it 'return FIELDS' do
+      expect(described_class.fields).to eq described_class::FIELDS
+    end
+  end
+
+  describe '.icons' do
+
+    it 'puts create icon onto the icons' do
+      expect(described_class.icons[:create][0]).to eq 'image/png'
+      expect(
+        described_class.icons[:create][1]
+      ).to eq ErrbitGithubPlugin.read_static_file('github_create.png')
+    end
+
+    it 'puts goto icon onto the icons' do
+      expect(described_class.icons[:goto][0]).to eq 'image/png'
+      expect(
+        described_class.icons[:goto][1]
+      ).to eq ErrbitGithubPlugin.read_static_file('github_goto.png')
+    end
+
+    it 'puts inactive icon onto the icons' do
+      expect(described_class.icons[:inactive][0]).to eq 'image/png'
+      expect(
+        described_class.icons[:inactive][1]
+      ).to eq ErrbitGithubPlugin.read_static_file('github_inactive.png')
+    end
+  end
+
+  let(:tracker) { described_class.new(options) }
+
+  describe '#configured?' do
+    context 'with errors' do
+      let(:options) { { invalid_key: '' } }
+      it 'return false' do
+        expect(tracker.configured?).to eq false
+      end
+    end
+    context 'without errors' do
+      let(:options) do
+        { username: 'foo', password: 'bar', github_repo: 'user/repos' }
+      end
+      it 'return true' do
+        expect(tracker.configured?).to eq true
+      end
+    end
+  end
+
+  describe '#url' do
+    let(:options) { { github_repo: 'repo' } }
+    it 'returns issues url' do
+      expect(tracker.url).to eq 'https://github.com/repo/issues'
+    end
+  end
+
+  describe '#errors' do
+    subject { tracker.errors }
+    context 'without username' do
+      let(:options) { { username: '', password: 'bar', github_repo: 'repo' } }
+      it { is_expected.not_to be_empty }
+    end
+    context 'without password' do
+      let(:options) do
+        { username: '', password: 'bar', github_repo: 'repo' }
+      end
+      it { is_expected.not_to be_empty }
+    end
+    context 'without github_repo' do
+      let(:options) do
+        { username: 'foo', password: 'bar', github_repo: '' }
+      end
+      it { is_expected.not_to be_empty }
+    end
+    context 'with completed options' do
+      let(:options) do
+        { username: 'foo', password: 'bar', github_repo: 'repo' }
+      end
+      it { is_expected.to be_empty }
+    end
+  end
+
+  describe '#repo' do
+    let(:options) { { github_repo: 'baz' } }
+    it 'returns github repo' do
+      expect(tracker.repo).to eq 'baz'
+    end
+  end
+
+  describe '#create_issue' do
+    subject { tracker.create_issue('title', 'body', user: user) }
+    let(:options) do
+      { username: 'foo', password: 'bar', github_repo: 'user/repos' }
+    end
+    let(:fake_github_client) do
+      double('Fake GitHub Client').tap do |github_client|
+        github_client.stub(:create_issue).and_return(fake_issue)
+      end
+    end
+    let(:fake_issue) do
+      double('Fake Issue').tap do |issue|
+        issue.stub(:html_url).and_return('http://github.com/user/repos/issues/878')
+      end
+    end
+
+    context 'signed in with token' do
+      let(:user) do
+        {
+          'github_login' => 'bob',
+          'github_oauth_token' => 'valid_token'
+        }
+      end
+      it 'return issue url' do
+        Octokit::Client.stub(:new).with(
+          login: user['github_login'], access_token: user['github_oauth_token']
+        ).and_return(fake_github_client)
+        expect(subject).to eq fake_issue.html_url
+      end
+    end
+
+    context 'signed in with password' do
+      let(:user) { {} }
+      it 'return issue url' do
+        (Octokit::Client).stub(:new).with(
+          login: options['username'], password: options['password']
+        ).and_return(fake_github_client)
+        expect(subject).to eq fake_issue.html_url
+      end
+    end
+
+    context 'when unauthentication error' do
+      let(:user) do
+        { 'github_login' => 'alice', 'github_oauth_token' => 'invalid_token' }
+      end
+      it 'raise AuthenticationError' do
+        (Octokit::Client).stub(:new).with(
+          login: user['github_login'], access_token: user['github_oauth_token']
+        ).and_raise(Octokit::Unauthorized)
+        expect { subject }.to raise_error
+      end
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..badea54
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,28 @@
+if ENV['COVERAGE']
+  require 'simplecov'
+  if ENV['CI']
+    require 'coveralls'
+    Coveralls.wear!
+    SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[
+      SimpleCov::Formatter::HTMLFormatter,
+      Coveralls::SimpleCov::Formatter
+    ]
+  end
+
+  SimpleCov.start
+end
+
+require 'errbit_plugin'
+require 'errbit_github_plugin'
+require 'active_support/all'
+
+RSpec.configure do |config|
+  config.run_all_when_everything_filtered = true
+  config.filter_run :focus
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = 'random'
+end